5306-00-680-5080 (FFS85)
NSN 5306-00-680-5080 (NIIN 00-680-5080) is a machine bolt in Federal Supply Class 5306, Bolts — an externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. Manufacturer part number FFS85 (Federal Specifications Promulgated, CAGE 81348); also referenced as MS35304-44 (Military Standards).
Key specs: finished head; 32 rockwell c minimum and 38 rockwell c maximum overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Related NSN 5306-00-051-4086.